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From GitBox <>
Subject [GitHub] alerman opened a new issue #517: Tiered Storage Volume Chooser
Date Tue, 05 Jun 2018 12:46:10 GMT
alerman opened a new issue #517: Tiered Storage Volume Chooser
   For systems with a mixture of high density, slower disks and low density faster disks provide
a volume chooser that can be configured to put data accesses more often onto the faster disks.
This will require having the fast/slow disks partitioned into seperate volumes, and will also
require that the _majorCompact code be modified to use the volume chooser to determiner where
to put new files, instead of relying on srv:dir. This choice will be made based on the tablet
that is being compacted using a user defined strategy for how to decide which volume to use.
   1. New TieredStorageVolumeChooser
   2. New configuration options for the volume chooser
   3. Updates to major compaction code that determines the output file location (Specifcally
around line 1945 of
   4. A VolumeChooserStrategy that can be user defined to allow users to define how to pick
the new volumes

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